Machine for making pyjama frogs



i 1,639,099 Aux- 1927- L. H. MORIN v IACHINB FOR MAKING PYJAIA FROGS Filed Aug. 13, 1926 4 Sheets-Sheet 1 R gm INFIENTQR bumokusv a Aug. 16, 1927.

L. H.'MORIN IIACHINB FOR MAKINGTRY JAIA ERQGS 3 INVENT DR pBY A; ATTORNEYS Aug.16, 1927. L H. MORIN 639 099 MACHINE F0 MAKING PYJAIA FROGS Fil d Aug. 13, 1926 4 Sheets-Sheet 3 \1- MATTORNEYS Aug. 16, 1927.

- 1,639,099 L. H. MORIN 7 MACHINE FOR MAKING PYJAIIA FROGS Filed Ana. 15; 1926 4 Sheets-Sheet 4 INVENTOR LATroRNEYs Patented Aug. 16, 1927.

UNITED STATES PATIENT mace.

LOUIS H. MORIN, or new YORK, iv. Y., ASSIGNOR To A. s. 'PHILLII'S; F ivEw YORK, N. I

MACHINE non MAKING PYJ'AMA moss. I

Application filed August 13, 1926. Serial No. 129,076.

cially woven tape or braid provided along it edges withcords slidable within the woven fabric of the tape. The tape is curved flatwise to form the characteristic loops by pulling one of these cords while holding the other fixed relat-iveto the tape, the contour and position of each loop being determined by the length of cord pulled and the place at which the fixed cord is held. So. far as I am aware all pyjama frogs today are made-by hand and although the operators acquire a high degree of skill it is difficult to reproduce hundreds ofthese frogs of exactly the same pattern, and besides, as is usually the case with hand labor the output is relatively small. It is the object of the present invention to provide a machine for making these frogs.

unit length of tape is held in position by a plurality of spaced grippers which press against one of the cords only while a moving member pulls the other cord. Asthe successive loops are made the grippers are released one by one by means synchronized with ,the moving member, thus changing the effective point at which the fixed cordis held, whereby a frog of exact and predetermined design is made. In order to make the machine auto- 5 matic and continuous in its operation I utilize the moving member which pulls the cord during the looping operation, to unwind the tape froma spool and draw it under the grippers, and, inview of the factthat during the looping operation the'moving member must pull on one ofthe cords only, I cause it to draw the tapejinto position under the-grippers through a pull exerted on this same cord. The machine is thus all set for operating mechanism illustrated. drawings, Figure 1 1s a plan view of the In the machine which I have designed, a

each cutting thus leaving the cord exposed and n readiness to be seized. I i

In my co-pendmgapplication Serial No.

129,075 filed concurrently herewith I have illustrated and described a machine in which av single but movable gripping memberis employed. Except for. "this and'thedilferences inthe m chanisms for operating these two types of grippers, the two machines are identical. i

In the accon'ipanying drawings I, have illustrateda machine embodying, the principles of my invention. It is to be understood, of course, that this machinemight be modiiied in many respects and still embody the invention, this being particularly, true of the In these machine; Figure 2 is a transverse vertical section on an enlarged scale taken along'line 2-2 of Figure 1; Figure 3 is a front elevation of the machine; -FiguI'e 4 is a section taken alongline4t4: of Figure 3; Figure 5 is an enlarged detailed section along line 5v.5 o f Figure 1; Figure dis a detailed sec-' tion taken along line 66 of Figure 5; Figure 7 is'fa horizontal section taken along line 7+7 of Figure 2 and Figures 8, 9,10,11, 12, 13 and 14 are views of the frog in various stages of manufacture, Figure 14 being a view of the completed frog.

. The machine illustrated in these drawings comprises a base 1 'on which are mounted a plurality of standards 2 which support the various operating elements of the machine. A bracket 3 is secured to the left-hand standard and carries a spool 4c-whichsupplies the tape 5 from which the frogs are made. The tape from this spool is unwound, out off in unit lengths and formed into loops of the desired curvature and position to form the completed frog. Power is supplied to the machine through'a pulley 6 to which the main shaft 7 of the machine is connected length of tape from the spool.

Extending across the front of the machine is: a horizontal track or guide-way 10, T.- shaped in cross section, upon which is mounted a carriage 11 which is moved back and forth along this guide-way by means of a link-work consisting of five inter-connected links 12, 13,14, and 16, the links 14 and 16 being pivotally mounted 'upon 'the fixed bosses 17and 18. Fixed upon the shaft 7 is a cylindrical cam druin 20 provided with a peripheral camtgroove 21. The link 16 is provided with a cam follower 22 extending within the cam groove 21, and the reciprocation of the carriage 11 is thus controlled by the cam drum 20. The link 12 which is pivotally connected with the carriage 1 1 terminates in a dog 24 fixed relative to the link 12 so that when the carriage is moving toward the right, Figure 1, the dog 24 is swung clockwise and into contact with a plate 25 forming a part of the carriage. l/Vhen the carriage 11 is moved toward the left, the dog 24 is swung counterclockwise out of contact with the plate 25, butliinited in its counter-clockwise swinging by means of a suitable stop 26 on the carriage which engages the link 12.

The tape 5 as it leaves the spool extends through a guide-slot 27 in the bracket 3 and into the space between the dog 24 and the plate 25 when the carriage'is in its extreme left-hand position, as shown in Figure 1. The cam drum 20 then moves the carriage tothe right, acting through the various con- DQLLlDg links described above, and swings the dog 24 inward to seize the lower of the two edge cords of the projecting tape, as shown most clearly in Figure 2. Continued movement of the carriage toward the right draws a unit length of tape across the machine and after this unit length has been severed from the tape on the spool, the maehine is in readiness for the looping operation. I shall now describe the means for cutting oft this unit length of tape which has been drawn into looping position.

Pivotally mounted at'28 upon the lefthand standard 2 of the machine is a pair of shears 29, the cutting plane of which is just within the extreme left hand position of the dog 24. These shears are operated by means of a cam disk 30 fixed uponthe shaft 7 and provided wth a facial cam groove 31 in which is positioned a cam follower 32 mounted upon the ends of a bell-crank lever 83 pivotally mounted upon the standard 2 at 34, the otherarm of which is connected to thes'hears through links 36. Cam 30 is so designed that when the carriage has unwound a predetermined unit length of tape, the shears 29 operate to sever this unit length from the tape on thespool but leave the forward end of the new tape in position to be gripped by the carriage on its return movement. The shearing action just de scribed does not take place, however, until the unit length of tape has been securely gripped inposition'for looping, and I shall now describe the gripping means. 7

Extending across the front of the machine I extending'through the slot 41.

and supporting the guideway 10 is a plate 38 provided with a longitudinal slot 89 extending substantially across the machine. An angle-iron 40 mounted upon the upper rear face of the plate 38, extends across the machine and is likewise provided in its horizontal fiange with a longitudinal slot 41 co-extensive with the slot 39. The angleiron 40-supports a plurality of grippers 42 each provided at its forward end with a depending iingerel-Iiand each slidably mounted within an inverted Ushaped supportlng member 44 securedto the horizontal flange of'the angle iron by means of a setscrew 45 The forward end of each gripper extends through theslot 39 and the finger 43 is urged into contact with the plate 38 by means of a coil spring 46.

'Keyed upon the shaft 7 are a plurality of cam discs 47, one for each of the grippers 42. Each gripper supporting member 441's provided with tworearwardly extending flanges 48 which receive one of the cams 4T -so that each gripper with its supportingmember 4'4 and cam 47 constitutes a unit which may be moved bodily longitudinally ot' 'the machine and fixed in any desired position-by means of the setscrew'45. Each spring'46 holds the inner ends of its gripper against the peripheral face ofits cam and each cam is provided with a cut-out 48 which, as the shaft 47 is rotated, results in a-reciproca tion of thegripper. The cut-outs in the successive cams are so designed that the grippers are moved outward from the plate 38 in succession beginning with the left-hand grip- Jer.

hen the carriage 11 is drawing the unit length of the tape across the machine, the pull, as explained above, is exerted through the lower edge cord.- During this movement the fingers 43 of the grippers 42 are held'in their outermost position by the cams 47, as

illustrated most clearly in Figure 2, and the outer edge cord ispassed between them and the plate 38. As soon as the desired length of tape has'been unwound, the forward ends ofthe cam cut-outs 48 simultaneously permit the springs '46 to move the grippers toward the rear to grip the upper edge'of'the tape and hold it against the plate 38. The tape is thus securely held,the shearing action immediately follows and the tape is in :position for the looping operation which I shall now describe.

' The left-hand gripper grips the left-hand end of the tape somewhereintermediate its ends, but close to the left-hand end, so that further movement of the carriage 11 to the rightpulls the lower edge cord, curving'the left-hand end of the tape as illustrated in Figure 8. To form a single loop of the desired curvature and to form a plurality of such loops in proper spaced relation, it is automatically accomplished by the, cams 47 which release the grippers 42 in timed sequence as explained above, each gripper holding. the tape until the forward movementof the carriage 11 has efi'ected the desired curvature of that portion of the tape lying to the left of the gripper. The curve illustrated in Figure 8 is made before the first gripper is released; the curve of Figure 9 after the first gripper has been released but before the second has been released; and

the completed loop of Figure 10 is made of the tape and shouldbe cutoff. This is accomplished by means of aknife 60 pivoted at 61 on the right-hand standard 2 co-operating with a shear blade 62, and operated by means of an arm 63 carrying a cam roller 64: which is controlled by a cam 65 on the peripheral face of the cam drum 20. This cam is so timed that when the frog has been completed, the extending cord is severed and the completed frog deposited upon an olfbearing belt 66, operated by means of a chain and sprocket connection 67 from the shaft 7. The frogs thus looped are complete except for a light stitching designed to keep them in proper shape during packing and shipping.

The cycle just described is now repeated, the carriage 11 being moved to the left in position to seize and unwind a new unit length of tape and the grippers extending outward from the plate 38 and in readiness to grip the new unit length at the beginning of the loopingoperation. It is necessary, however, that the dog 24 should seize only the lower edge cord of'the new tape, as otherwise when the looping operation begins and the tape itself is held stationary, the fabric would be torn. I shall now describe the mechanism for preparing the forward end of the new tape for seizure by the dog 24.

Pivoted on the bracket 3 and beyond the shears 29 is an arm 68 provided at its inner end witha finger 69 designed to be swung against the fabric of the forward end of the tape between the two edge cords, but normally held out of contact with the tape by means of a spring 70 connecting the outer end of the arm 68 with an extension on the bracket 3. The inward swinging movement of the finger 69 is effected as follows: The

I arm 68 is provided intermedlate' lts ends with an extension 71 which is engaged by a setscrew 72 mounted upon the outer blade of the shears 29 when the shears are swung into wide open position to swing the finger 69 inward againstthe forward end of the tape, this movement stripping the edge cords and leaving them bare for a sufficient distance to permit the dog 24: to get a clean grip When the shears-29.

upon the lower cord. are operated to cut the tape the spring 70 swings the finger 69'out of the way.. The cam groove 31 is so designedthat after the cuttin operation the shears are opened only enough to free them from the tape and swing them out of the path of the dog 24;, but not enoughto causecontact between setscrew 72 and extension 71. Thus the spring 70 holds the finger 69 out of contact with the tape and permits the dog 24: freely to grip and draw the tape.

, The pattern to which the frogs are made is determined by the spacing of the grippers 42 and their associated cams so that by varying the setting of these frogs of any desired pattern, within limits, can'be made.

The machine of my invention is capable of producing frogs rapidly, continuously and automatically as long as any tape remains on the spool. Not only can a single operator with one oft-hese machines greatlyexceed the output per hour of many hand workers, but the machine-looped frogs are more perfectly made and can be reproduced exactly to any desired pattern.

Iclaim:

1. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for gripping the tape at a plurality of points along one edge, means for pulling the cord in the other edge to form a loop in the tape, and means synchronized with the pulling means for releasing the gripping means in succession as the loop is formed, the spacing of the gripping means determining the curvature of the loop.

2. A machine for making pyjama frogs from tape'having slidable edge cords comprising the combination of means for gripping the tape at a plurality of points along one edge, means for pulling the cord in the other edge to form loops ,in the tape, and

means synchronized with the pulling means.

for releasing the gripping means in succession as the loops are formed, the spacing of the gripping means determining the curvature and position of the loops.

3. A machine for making pyjama frogs from tape having slidable edge cords comrising the combination of a plate against which the tape lies, a plurality of grippers spaced along the plate forpressing one edge of the tape against the plate to hold the tape against bodily movement, means for pulling the cord in the otheredge to form loops in the tape, and means tor moving the grippers away from the plate in succession to advance the effective point at which the tape is gripped in the direction of movement of the pulling means, thus determining the curvature and position oi? the loops.

4:. A machine for making pyjama trogs from tape/having slidable edge cords comprising the combination of a shaft, a plate paralleling the shaft against which the tape lies a plurality of cams keyed along the shaft at spaced intervals, 'a gripper associated with each am for pressing one edge of the tape against the plate to hold the tape against bodily movement, means oper ated from the shaft for pulling the cord in the other edge to form loops in the tape, the cams being shaped so as to move the grippers away from the plate in succession to advance the effective point at which the tapeis gripped m the direction of movement of the pulling means, thus determining the curvature and position of the loops.

5. A machine for making pyjama frogs tt'rom tape-having slidable edge cords comprising vthe combination of a longitudinal plate, a plurality of grippers spaced along the plate, a or rriage, means on the carriage for seizing one oi the edge cords means for moving the carriage across the machine to draw out a unit length of tape between the plate and the grippers, means for causing the grippers to press the other edge of thetape against the plate to'prevent turther bodily movement thereof, and means synchronized with the carriage for releasing the grippers in succession as further movement or the carriage pulls the free cord, thus forming in the. tape loops of prede termined curvature and position.

In testimony whereof I affix my signature.

LOUIS H. MORIN.

CERTIFICATE OF CORRECTION.

Patent No. 1,639,099, Granted August 16, 1927, to

LOUIS H. MORIN.

It is hereby certified that error appears in the above numbered patent requiring correction as follows: In the grant, heading to the drawings, and throughout the specification, -for the word "pyjama" read "pajama"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of December, A. D. 1927.

M. J. Moore, Seal.

Acting Commissioner of Patents. 

